I'm happy with it now. It accelerates better than it did stock. It's not a huge gain in performance, but it's noticable. Its got a nice sound when you get on it. The only bad thing I can see is I think I will have to remove the whole filter housing to clean the filter. There's not enough room to slide the filter element out the end of the housing, before it hits the fender. It's a minor inconvience, but I'm glad I got it.